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2007 Confidence Interval Detail
246/Williamson
246-908/Liberty Hill ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 140,427,733 0.9389 149,566,230 32 1,054 .020756255
A 140,608,706 0.9799 143,492,914 44 573 .006888184
A 140,247,160 0.9955 140,881,125 49 421 .005402981
A 140,341,071 0.9821 142,898,962 30 244 .007169602
C 18,801,100 1.0307 18,241,098 9 457 .028876249
C 18,779,844 0.9271 20,256,546 7 263 .070939622
C 20,178,860 0.9258 21,796,133 9 140 .041360300
C 17,367,956 1.0428 16,655,117 11 68 .008259775
D3 101,137,360 1.0231 98,853,836 23 1,896 .030082561
F1 16,865,452 0.9740 17,315,659 8 72 .001693448
F1 17,042,236 1.0096 16,880,186 6 34 .009861314
F1 16,272,987 1.0389 15,663,670 7 19 .007033110
F1 16,571,362 0.9965 16,629,565 4 9 .002178361
Random Totals: 804,641,827   819,131,041 239 5,250  
Catg D1 Exception Values: 3,134,565   2,575,794      
Total Test Values (4): 807,776,392   821,706,835      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 41,085,342

Confidence Interval Values (5)

State Lower Limit: 780,621,493 (State Test Value minus Margin of Error Percent)
Local Test Value: 807,776,392 (Within Confidence Interval)
State Upper Limit: 862,792,177 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 824,843,304 (See ISD Summary Worksheet)

Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories

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